▲ Kev nce ntawm cerium hydroxide
Nyob rau hauv kev tsim kho tshiab ntawm cov thev naus laus zis tshiab, yav tom ntej ntawm kev lag luam tseem muaj kev tsis paub meej. Txawm li cas los xij, qhov kev nce ntxiv tsis ntev los no ntawm cerium hydroxide tau coj kev cia siab tshiab rau daim teb no. Raws li cov khoom siv inorganic tseem ceeb, cerium hydroxide maj mam tau txais kev vam meej hauv kev lag luam tshiab vim nws cov yam ntxwv tshwj xeeb thiab muaj peev xwm siv dav. Tom ntej no, peb yuav nkag mus rau hauv lub ntiaj teb ntawm cerium hydroxide, nkag mus tob dua rau hauv nws cov kev siv ntau yam hauv kev lag luam tshiab thiab cov laj thawj tom qab nws lub peev xwm ua cov khoom siv hluav taws xob tshiab zoo.
▲ Lub hauv paus tseem ceeb hauv cov roj cell
Cerium hydroxide ua lub luag haujlwm tseem ceeb hauv kev siv lub zog tshiab, tshwj xeeb tshaj yog hauv kev siv roj cell. Nws cov yam ntxwv tshwj xeeb thiab cov tshuaj lom neeg ua rau nws yog ib qho tseem ceeb ntawm cov roj cell. Los ntawm kev nkag siab tob txog cov ntsiab cai ua haujlwm thiab cov txheej txheem ntawm cerium hydroxide hauv cov roj cell, peb tuaj yeem nkag siab zoo dua txog nws lub peev xwm thiab kev cia siab rau kev siv hauv kev siv lub zog tshiab.
Vim nws cov ionic conductivity thiab cov tshuaj lom neeg ruaj khov, cerium hydroxide yog cov khoom siv electrolyte zoo tagnrho rau cov roj cell oxide khov kho (SOFCs). Nyob rau hauv qhov kub siab, nws ua rau cov pa oxygen ion migration zoo, ua rau cov tshuaj electrochemical thiab muab lub zog muaj zog rau kev ua haujlwm ruaj khov ntawm SOFCs. Cerium hydroxide yog ib qho tseem ceeb ntawm "lub plawv" ntawm SOFCs, thiab nws qhov muaj nyob yog tsav tsheb txuas ntxiv mus rau kev tsim kho tshiab thiab kev nce qib ntawm cov thev naus laus zis tshiab.
▲ Daim ntawv thov hauv kev siv tshuab khaws cia hluav taws xob
Nrog rau kev loj hlob sai ntawm cov tsheb fais fab tshiab thiab lub zog rov ua dua tshiab, kev siv tshuab khaws cia lub zog tau dhau los ua lub hauv paus tseem ceeb. Tiv thaiv qhov keeb kwm yav dhau los no, daim ntawv thov ntawmcerium hydroxideHauv kev lag luam khaws cia lub zog tau maj mam nyiam mloog. Ua ib qho kev hloov kho rau cov khoom siv electrode, nws tuaj yeem txhim kho kev ua tau zoo ntawm cov khoom siv electrode, yog li ua kom lub roj teeb lub voj voog ruaj khov thiab muaj peev xwm tso tawm sai. Qhov no yog vim qhov tseeb tias cerium hydroxide tuaj yeem koom nrog hauv cov tshuaj redox ntawm qhov chaw electrode thaum lub sijhawm them thiab tso tawm roj teeb, txo cov qauv puas tsuaj rau cov khoom siv electrode thiab yog li ua kom lub roj teeb lub neej ntev dua. Saib rau pem hauv ntej, nrog rau kev nce qib ntawm cov thev naus laus zis khaws cia lub zog, kev siv cerium hydroxide hauv kev lag luam khaws cia lub zog tshiab yuav muaj peev xwm ntau dua.
▲ Muaj peev xwm ua tau cov thev naus laus zis hydrogen
Nrog rau kev hloov pauv ntawm cov qauv zog, cov thev naus laus zis tsim hydrogen tau txais kev saib xyuas ntau ntxiv. Cerium hydroxide, ib qho tshuaj uas muaj cov yam ntxwv tshwj xeeb, qhia txog lub peev xwm tseem ceeb rau kev siv hauv kev tsim hydrogen. Los ntawm kev koom nrog cov tshuaj lom neeg, nws tuaj yeem txhim kho kev ua haujlwm zoo thiab kev ruaj khov ntawm cov txheej txheem tsim hydrogen, muab kev txhawb nqa thev naus laus zis tshiab rau kev hloov pauv zog.
Hauv kev txhim kho kev lag luam hydrogen zog, kev siv tshuab tsim hydrogen zoo thiab pheej yig tau dhau los ua qhov kev tshawb fawb tseem ceeb thiab kev txhim kho. Cerium hydroxide, ib qho catalyst tshwj xeeb, tuaj yeem txhawb nqa cov tshuaj lom neeg xws li oxidation ntawm cawv thiab epoxidation ntawm olefins, yog li ua tiav kev tsim hydrogen zoo hauv cov tshuaj no. Cerium hydroxide kuj muaj peev xwm ua haujlwm ua photocatalyst, muaj peev xwm rhuav tshem cov dej molecules hauv qab lub teeb kom tsim hydrogen. Cov khoom no muab cerium hydroxide dav dav rau kev siv hauv kev lag luam hydrogen zog thiab xav tias yuav txhaj tshuaj tshiab rau hauv kev txhim kho sai ntawm kev lag luam.
▲ Daim ntawv thov hauv thaj chaw ntawm kev tiv thaiv ib puag ncig
Thaum tham txog lub luag haujlwm tseem ceeb ntawm cerium hydroxide hauv kev lag luam hydrogen zog, peb tsis tuaj yeem pab tab sis hais txog nws cov kev siv tseem ceeb hauv kev tiv thaiv ib puag ncig. Ua ib qho catalyst zoo heev, cerium hydroxide tuaj yeem pab txhawb ntau yam kev tshuaj lom neeg organic. Cov tshuaj no tsis yog tsuas yog pab txhawb rau kev tsim hydrogen xwb tab sis kuj ua rau muaj kev hloov pauv thiab kev siv cov peev txheej ntawm cov khib nyiab organic. Ntxiv mus, cerium hydroxide cov khoom photocatalytic ua rau nws yog ib qho cuab yeej muaj zog rau kev daws teeb meem kev ua qias tuaj ib puag ncig. Los ntawm kev rhuav tshem cov dej molecules thiab lwm yam txheej txheem, nws tuaj yeem hloov cov tshuaj lom neeg mus rau hauv cov tsis muaj teeb meem, yog li tiv thaiv thiab txhim kho ib puag ncig.
Ntxiv rau nws txoj kev vam meej tseem ceeb hauv kev lag luam tshiab ntawm lub zog, cerium hydroxide kuj tau ua pov thawj tias nws muaj txiaj ntsig zoo hauv kev tiv thaiv ib puag ncig. Siv nws cov khoom siv catalytic tshwj xeeb, cerium hydroxide siv dav dav los rhuav tshem cov pa phem, pab txo cov pa phem ib puag ncig. Nws kuj tseem siv tau ua cov khoom siv ntxiv rau iav thiab cov xim ceramic, ua kom cov khoom ua haujlwm zoo dua thiab txhim kho nws cov qauv ib puag ncig. Qhov kev sib koom ua ke no thoob plaws lub zog tshiab thiab cov khoom siv ib puag ncig tau ua rau muaj kev thov ntau ntxiv rau kev ua lag luam rau cerium hydroxide, txhawb nqa nws txoj kev siv dav dua hauv kev lag luam tshiab.
▲ Kev Lag Luam Saib Xyuas
Nrog rau kev nce qib sai ntawm kev lag luam fais fab tshiab thiab kev nyiam ntawm kev paub txog ib puag ncig, kev xav tau kev lag luam rau cerium hydroxide txuas ntxiv mus. Cov koom haum muaj cai kwv yees tias kev lag luam rau cerium hydroxide yuav txuas ntxiv nthuav dav hauv xyoo tom ntej, tshwj xeeb tshaj yog nyob rau hauv cov teb tshiab xws li roj cell, cov thev naus laus zis khaws cia hluav taws xob, thiab kev lag luam hydrogen zog, qhov twg nws daim ntawv thov yuav muaj kev loj hlob sai. Qhov kev lag luam no yuav tsis muaj qhov tsis tau muaj dua los ua rau kev lag luam cerium hydroxide vam meej.
▲ Kev Cia Siab Yav Tom Ntej
Nrog rau kev vam meej ntawm kev lag luam fais fab tshiab thiab kev siv cov tswv yim tiv thaiv ib puag ncig ntau zuj zus, kev thov ua lag luam rau cerium hydroxide yuav tseem muaj zog. Cov koom haum muaj cai kwv yees tias kev ua lag luam rau cerium hydroxide yuav txuas ntxiv nthuav dav rau ob peb xyoos tom ntej, tshwj xeeb tshaj yog nyob rau hauv cov teb tshiab xws li roj hlwb, thev naus laus zis khaws cia hluav taws xob, thiab kev lag luam hydrogen zog, qhov twg nws daim ntawv thov yuav loj hlob sai. Qhov kev loj hlob ntawm kev ua lag luam no qhia txog yav tom ntej zoo dua rau kev lag luam cerium hydroxide.
Cerium hydroxide, nrog nws cov khoom siv lub cev thiab tshuaj lom neeg tshwj xeeb thiab kev siv dav hauv ntau qhov chaw, maj mam tshwm sim ua lub hnub qub ci ntsa iab hauv kev lag luam tshiab. Nws qhia txog kev siv tau zoo heev thiab tus nqi lag luam hauv cov chaw tseem ceeb xws li roj cell, thev naus laus zis khaws cia hluav taws xob, kev lag luam hydrogen zog, thiab txawm tias kev tiv thaiv ib puag ncig. Saib rau pem hauv ntej, nrog kev nce qib ntawm cov thev naus laus zis hluav taws xob tshiab thiab kev thov kev lag luam loj hlob, cerium hydroxide yuav ua lub luag haujlwm tseem ceeb dua hauv kev lag luam hluav taws xob tshiab, txhaj tshuaj muaj zog rau hauv kev txhim kho ntsuab thiab kev ruaj khov ntawm tib neeg lub zej zog. Cia peb txhua tus tos ntsoov yuav pom kev txhim kho zoo ntawm cerium hydroxide hauv kev lag luam hluav taws xob tshiab.